JP3029895U - Laminated rubber bearing device with lead plug - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] The degree of freedom of engagement with a fixing bolt or the like can be increased, a plurality of lead plugs can be provided for easy designing, and the bearing device can be easily replaced. To provide a laminated rubber bearing device including a lead plug capable of performing the above. A laminated rubber bearing device (1) containing lead plugs has a laminated rubber body (4) formed by alternately laminating reinforcing layers (2) and rubber layers (3).
And the mounting plates 7 and 8 mounted on the upper and lower surfaces 5 and 6 of the laminated rubber body 4, and the lead plugs 9 to 12 penetrating the laminated rubber body 4 and the mounting plate 7. The lead plugs 9 to 12 are arranged such that the centers of the lead plugs 9 to 12 are respectively located at the corners 32, 33, 34 and 35 of the diamond 31 with respect to the rectangular planar shapes of the mounting plates 7 and 8.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention comprises a laminated rubber body in which a reinforcing layer and a rubber layer are alternately laminated, and a lead plug which penetrates through the laminated rubber body, and is provided between a structure and a foundation or the like. The present invention relates to a laminated rubber bearing device with a lead plug arranged to support a structure.

[0002]

[Problems to be solved by the device]

 A laminated rubber bearing device with lead plugs is used as a support for superstructures such as bridges and highways, and as a support for seismic isolation of these or even superstructures such as buildings and structures. in use.

A laminated rubber bearing device with a lead plug is arranged between an upper structure (bridge girder, building, etc.) and a lower structure (bridge pier, foundation, etc.), and is used for an upper structure and a lower structure due to an earthquake or the like. The relative displacement (horizontal displacement) that occurs between and is allowed by the shear deformation, and the displacement (vibration) energy at the relative displacement is damped by the shear plastic deformation of the lead plug.

In this type of laminated rubber bearing device, upper and lower mounting plates are attached to the upper and lower surfaces of the laminated rubber body by bolts or vulcanization adhesion, and the upper and lower structures are attached to the upper and lower structures. The sole plate and the base plate are arranged between the upper and lower mounting plates and the upper structure and the lower structure, and the upper mounting plate and the sole plate are fixed to the upper structure with bolts, etc. The base plate fixed to the lower structure is fixed to the lower mounting plate with bolts.

By the way, a lead rubber-containing laminated rubber bearing device is formed, for example, by arranging a plurality of lead plugs so as to penetrate to an upper mounting plate, and using an upper mounting plate having a rectangular planar shape. However, when this is placed between the bridge girder and the bridge pier to support the bridge girder, the position of the lead plug and the position of the bolt that attaches the upper mounting plate to the bridge girder via the sole plate interfere with each other. However, it may be difficult to select the bolt placement position. This problem is often encountered especially when replacing a conventional fixed bearing or a movable bearing using a roller, in which the bolt arrangement position is already determined, with a laminated rubber bearing device containing a lead plug.

[0006] It should be noted that such a problem does not necessarily occur only in the upper mounting plate and only for supporting the bridge girder, and in at least one of the upper mounting plate and the lower mounting plate, the construction is further It can also occur when bearing other structures such as objects. In the case of the lower mounting plate, the above problem occurs in relation to the anchor bolt fixed to the foundation or the like.

On the other hand, when the laminated rubber body is linearly displaced or rotated in one direction from the initial setting position with respect to the upper structure and the lower structure due to microvibration, etc., the laminated rubber body is effective. There is a possibility that the damping effect may not be obtained, and further, the support of the upper structure by the laminated rubber body may become unstable. In particular, for example, when the upper structure is a bridge girder and the lower structure is a pier, rocking is likely to occur in the horizontal plane intersecting the bridge axis direction, and unless special measures are taken to deal with this, rocking occurs in the horizontal plane. The laminated rubber body is likely to be displaced from the initial setting position with respect to the upper structure and the lower structure, and the damping effect as designed may not be obtained.

The present invention has been made in view of the above points, and an object of the present invention is to increase the degree of freedom of engagement with a fixing bolt or the like, and to provide a plurality of lead plugs. It is an object of the present invention to provide a laminated rubber bearing device with a lead plug, which can be easily designed and equipped and can be easily replaced.

Another object of the present invention is to always hold the laminated rubber body in the initial position with respect to the upper structure and the lower structure, and maintain the initial damping effect for a long period of time. Another object of the present invention is to provide a laminated rubber bearing device with a lead plug capable of reliably supporting the upper structure for a long period of time.

[0010]

[Means for Solving the Problems]

 According to the present invention, the above object is a lead rubber laminated rubber bearing device which is disposed between an upper structure and a lower structure supporting the upper structure and seismically supports the upper structure. A laminated rubber body in which reinforcing layers and rubber layers are alternately laminated, upper and lower attachment plates attached to the upper and lower surfaces of the laminated rubber body, and at least four pieces penetrating the laminated rubber body. These four lead plugs extend to at least a part of one of the upper and lower mounting plates, and the planar shape of one mounting plate is The four lead plugs, which are rectangular, are achieved by the laminated rubber bearings with lead plugs arranged at the corners of the rhombus with respect to the rectangular planar shape of the mounting plate.

In the present invention, the laminated rubber body is configured to include a reinforcing layer. However, the reinforcing layer may include only a plurality of thin reinforcing plates, or a plurality of thin reinforcing plates and the plurality of thin reinforcing plates. The upper and lower thick reinforcing plates provided with the thin reinforcing plates in between may be further provided, and further, a plurality of thin reinforcing plates and an upper or lower thick reinforcing plate may be provided. May be provided. The upper and lower reinforcing plates may be embedded in the rubber layers on the upper and lower surfaces of the laminated rubber body, or may be placed on the upper and lower surfaces of the rubber layer by vulcanization bonding or using an adhesive. Good. A steel plate is usually used for the reinforcing layer, but a fiber-reinforced hard rubber plate, a fiber-reinforced synthetic resin plate, or the like may be used.

As the material for forming the rubber layer, natural rubber is preferable, and a high damping rubber may be used in order to obtain the damping effect more effectively. The rubber layer is integrated with the reinforcing layer by vulcanization adhesion or bonding to the reinforcing layer. The laminated rubber body may have any shape such as a columnar shape, a prismatic shape, and an elliptic cylinder shape. However, when supporting a pier, the prismatic shape is preferable, and when supporting a building such as a building. Is preferably cylindrical.

When the laminated rubber bearing device with lead plugs of the present invention is for supporting bridge girders interposed between bridge girders and bridge piers, the four lead plugs have two lead plugs arranged at diagonal portions of the diamond shape. The lines connecting the centers of the individual lead plugs extend parallel to the bridge axis direction, and the lines connecting the centers of the remaining two lead plugs extend perpendicular to the bridge axis direction. It is preferable to have

Further, in the present invention, four lead plugs, which are usually formed of pure lead, are arranged at the respective corners of the rhombus with respect to the rectangular planar shape of the mounting plate, but still other lead plugs. May be arranged at the center of the laminated rubber body, or instead of this or together with this, a large number of other laminated rubber bodies may be arranged around the center of the laminated rubber body.

The lead rubber laminated rubber bearing device of the present invention holds the relative position of the laminated rubber body with respect to the upper structure with respect to the linear direction at least in the horizontal plane and at least the horizontal plane of the laminated rubber body with respect to the lower structure. Between the upper structure and the upper mounting plate and between the lower structure and the lower mounting plate in order to hold one of the relative positions in the linear direction of And the relative position of the laminated rubber body with respect to the upper structure in the horizontal plane and the rotation direction, and the linear direction and rotation of the laminated rubber body with respect to the lower structure in the horizontal plane. Intervening between the upper structure and the upper mounting plate and between the lower structure and the lower mounting plate to hold one of the relative positions with respect to the direction. It may further include linear and rotational position holding means.

When the linear and rotational position holding means is interposed between the lower structure and the lower mounting plate, the laminated rubber bearing device is arranged between the lower structure and the lower mounting plate. The substrate may be fixed to the lower structure with anchor bolts or the like. On the other hand, when the board is provided, the engaging piece engaged with the recess or the through hole formed in the lower mounting plate on the one hand and the engaging piece engaged with the recess or the through hole formed on the other side with the board. Even if the linear and rotational position holding means is provided, or engages with a recess or a through hole formed in the base plate or the lower mounting plate, and is attached to the lower mounting plate or the base plate. The linear and rotation direction position holding means may be configured by including a fitting protrusion.

When the linear and rotational direction position holding means is interposed between the lower structure and the lower mounting plate, the linear position holding means is provided between the upper structure and the upper mounting plate. Intervened. In the case of an example in which the sole plate is arranged between the upper structure and the upper mounting plate and is fixed to the upper structure by bolts, etc., the linear position holding means is formed on the upper mounting plate on the one hand. Mounting plate or sole plate which is configured to include an engaging piece which engages with the recess or through hole formed in the sole plate and which engages with the recess or through hole formed in the sole plate on the other hand. It may be configured to include an engaging projection that engages with the recess or the through hole formed in, and that is attached to the sole plate or the upper mounting plate. Furthermore, in order to exert the same function as the linear and rotational position holding means, the linear position holding means holds the relative position of the laminated rubber body with respect to the upper structure in the horizontal direction in the horizontal plane, and A plurality of engagement pieces or a plurality of engagement projections or at least one engagement piece and at least one so that the relative position of the laminated rubber body with respect to the upper structure with respect to the rotational direction in the horizontal plane is also maintained. May be provided in combination with the engaging projection of. That is, the linear and rotational direction position holding means is interposed between the upper structure and the upper mounting plate and between the lower structure and the lower mounting plate to form a laminated rubber bearing device. Good.

Alternatively to the above, the linear and rotational position holding means may be interposed between the upper structure and the upper mounting plate. In this case, and in the case of the laminated rubber bearing device further comprising a sole plate arranged between the upper structure and the upper mounting plate and fixed to the upper structure by bolts or the like, , On the one hand, it engages with a recess or through hole formed in the upper mounting plate, and on the other hand, it is equipped with an engaging piece engaged with the recess or through hole formed in the sole plate Even if the rotation direction position holding means is configured, it is provided with an engaging projection that engages with a recess or a through hole formed in the upper mounting plate or the sole plate, and is attached to the sole plate or the upper mounting plate. You may comprise a linear and rotation direction position holding means.

When the linear and rotational direction position holding means is interposed between the upper structure and the upper mounting plate, the linear position holding means is disposed between the lower structure and the lower mounting plate. Intervened. In this case, in the laminated rubber bearing device further provided with a substrate arranged between the lower structure and the lower mounting plate and fixed to the lower structure by anchor bolts or the like, the linear position holding means is , On the one hand, even if it is provided with an engaging piece engaged with a recess or through hole formed in the lower mounting plate, and on the other hand with an engaging piece engaged with the recess or through hole formed in the substrate, It may be provided with an engaging projection that engages with a recess or a through hole formed in the base plate or the lower mounting plate and is mounted on the lower mounting plate or the base plate.

It should be noted that the linear and rotational direction position holding means is provided with only a plurality of engaging pieces or a plurality of engaging protrusions or a combination of at least one engaging piece and at least one engaging protrusion. You may have. Further, the linear position holding means and the engaging pieces or engaging projections of the linear and rotational direction position holding means may also be engaged with the laminated rubber body. In particular, the laminated rubber body is provided with a thick reinforcing plate. In this case, the engaging piece or the engaging protrusion may be engaged with the recess or the through hole formed in the corresponding thick reinforcing plate.

[0021]

[Embodiment of device]

 Next, the present invention and the embodiments of the present invention will be described in detail based on the preferred embodiments shown in the drawings. The present invention is not limited to these embodiments.

[0022]

【Example】

 1 to 3, the lead rubber laminated rubber bearing of the present example, which is arranged between the bridge girder A as an upper structure and the bridge pier B as a lower structure supporting the bridge girder A, supports the bridge girder A in a seismic isolation manner. The device 1 includes a laminated rubber body 4 formed by alternately laminating a reinforcing layer 2 and a rubber layer 3 made of natural rubber, and upper and lower mounting plates attached to upper and lower surfaces 5 and 6 of the laminated rubber body 4. 7 and 8, the four lead plugs 9 to 12 arranged through the laminated rubber body 4 and the upper mounting plate 7, and the relative position of the laminated rubber body 4 relative to the bridge girder A in the horizontal direction in the horizontal plane. In order to perform holding, the linear position holding means 13 interposed between the bridge girder A and the upper mounting plate 7 and the relative position of the laminated rubber body 4 with respect to the pier B in the horizontal direction and the rotating direction in the horizontal plane. Between the pier B and the lower mounting plate 8 in order to hold it The existing linear and rotational direction position holding means 14, the sole plate 16 arranged between the bridge girder A and the upper mounting plate 7 and fixed to the bridge girder A by bolts 15, and the installation of the pier B and the lower part. It is provided between the plate 8 and the base plate 18 and is fixed to the pier B by the anchor bolts 17.

The reinforcing layer 2 includes a plurality of reinforcing plates 21 made of thin steel plates and a lower reinforcing plate 23 made of thick steel plates provided in a recess 22 formed in the lower surface 6 of the rubber layer 3. ing. The mounting plate 7 is fixed to the upper surface 5 of the rubber layer 3 by vulcanization adhesion or an adhesive, and the mounting plate 8 is fixed to the reinforcing plate 23 by a plurality of bolts 24. This prevents the mounting plate 7 from being lifted from the laminated rubber body 4 and the laminated rubber body 4 being lifted from the mounting plate 8 when the laminated rubber bearing device 1 rolls (swings in a vertical plane). ing. The rubber layer 3 is arranged so as to also cover the outer peripheral edge of the reinforcing layer 2.

In this example, the planar shapes of both the upper and lower mounting plates 7 and 8 are square, and the four lead plugs 9 to 12 are diamond-shaped with respect to the rectangular planar shapes of the mounting plates 7 and 8. The center of each of the corners 32, 33, 34 and 35 of 31 is located and arranged. The laminated rubber body 4 having four through holes 36 through which the lead plugs 9 to 12 respectively penetrate is a prismatic shape corresponding to the shapes of the mounting plates 7 and 8.

The laminated rubber bearing device 1 with lead plugs is, in this example, for supporting bridge girders interposed between the bridge girders A and the bridge piers B to support the bridge girders A, and thus is made of pure lead. In each of the lead plugs 9 to 12, a line (diagonal line) 37 connecting the centers of the two lead plugs 9 and 11 arranged in the diagonal portions 32 and 34 of the diamond 31 extends orthogonally to the bridge axis direction X. , And a line (diagonal line) 38 connecting the centers of the remaining two lead plugs 10 and 12 is arranged so as to extend parallel to the bridge axis direction X.

The linear position holding means 13 is inserted into the recess 41 of the upper mounting plate 7 so as to engage with the mounting plate 7 on the one hand, and is inserted into the recess 42 of the sole plate 11 on the other hand. The upper engaging piece 43 engaged with the sole plate 11 is provided.

The linear and rotational position holding means 10 is inserted into the two through holes 51 and 52 formed in the lower mounting plate 8 and engages with the mounting plate 8 on the one hand, and the base on the other hand on the other hand. It is provided with two engaging pieces 55 and 56 which are inserted into two recesses 53 and 54 formed in the plate 18 and engage with the substrate 18. The engaging pieces 55 and 56 are also inserted into and engaged with the two recesses 57 and 58 formed in the reinforcing plate 23, respectively.

The lower two engaging pieces 55 and 56 are provided symmetrically with respect to the center O of the laminated rubber body 4 in the direction orthogonal to the bridge axis direction X. The upper engaging piece 43 is arranged at the center O of the laminated rubber body 4. The lower mounting plate 8 is mounted on the substrate 18 by welding or the like, and the bridge girder A, the sole plate 16 and the upper mounting plate 7 are fixed to each other by a plurality of bolts 15.

As described above, the lead plugs 9 to 12 are arranged such that the centers thereof are located at the corners 32, 33, 34 and 35 of the diamond 31 with respect to the rectangular planar shape of the mounting plates 7 and 8. In the laminated rubber bearing device 1 having the above, it is possible to secure a wide area 66 between the corners 63 of the mounting plates 7 and 8 and the rhombus 31 in which the end surfaces 65 of the lead plugs 9 to 12 are not located. Therefore, it is possible to increase the degree of freedom of the screwing position (bolt disposing position) of the bolt 15 to the mounting plate 7. In particular, when replacing a conventional fixed bearing or a movable bearing using a roller, in which the bolt arrangement position is already determined, with the lead rubber laminated rubber bearing device 1, the bolt arrangement position can be selected within the wide area 66. .

By arranging a plurality of lead plugs around the center O of the laminated rubber body 4 as in this example, the damping function of the lead plugs can be effectively used when the bridge girder A swings. You can

Further, in the laminated rubber bearing device 1, even if the bridge girder A swings and the bridge girder A swings in the horizontal plane and in the direction intersecting the bridge axis direction X, the two engaging pieces 55 and 56 are not moved downward. Since it is arranged between the mounting plate 8 and the board 18, the mounting plate 8 to the board 18 is not fixed even if the welding is insufficient and the board 18 and the mounting plate 8 are not sufficiently fixed to each other by welding. Of course, the relative position in the horizontal direction in the horizontal plane is maintained, as well as the relative position around the center O of the mounting plate 8 with respect to the substrate 18 (the rotation direction in the horizontal plane). Moreover, since the engaging piece 43 is arranged between the upper mounting plate 7 and the sole plate 16, the bolt 15 is temporarily loosened, and the bolt 15 between the upper mounting plate 7 and the sole plate 16 is used. Even when the mutual fixing is insufficient, the linear relative position of the sole plate 16 with respect to the upper mounting plate 7 in the horizontal plane is also maintained. Therefore, the relative position of the laminated rubber body 4 with respect to the bridge girder A and the bridge pier B is also held at the initial setting position, the damping effect of the laminated rubber body 4 can be obtained in a predetermined manner, and the support for the bridge girder A also becomes unstable. Absent.

As described above, when the lead plug is used, the rubber layer 3 is often made of normal natural rubber, but high damping rubber may be used. Further, although the linear and rotational direction position holding means 14 is configured by using the engaging pieces 55 and 56 in the above-mentioned example, instead of this, two pieces integrally formed and attached to the base plate 18 or the attachment plate 8 are attached. The linear and rotational position holding means may be provided with an engaging protrusion, and further, an engaging protrusion separate from the substrate 18 is prepared and joined to the substrate 18 by welding or the like. You may attach it integrally. Further, instead of the engaging piece 43, an engaging projection may be formed on the sole plate 16 to perform the same operation as the engaging piece 43.

[0033]

[Effect of device]

 As described above, according to the present invention, it is possible to increase the degree of freedom of engagement with fixing bolts, etc., and to easily design with a plurality of lead plugs and to easily support the bearing device. Can be exchanged.

Further, according to the present invention, the laminated rubber body can be always held at the initial position with respect to the upper structure and the lower structure, and the initial damping effect can be maintained for a long time. It can reliably support an object for a long period of time.

[Brief description of drawings]

FIG. 1 is an I-I shown in FIG. 2 of a preferred embodiment of the present invention.
It is a line section explanatory view.

2 is a cross-sectional explanatory view taken along the line II-II of the example shown in FIG.

FIG. 3 is an example of III-II shown in FIG. 2 in the example shown in FIG.
It is an I line sectional view.

[Explanation of symbols]

 1 Laminated Rubber Bearing Device with Lead Plug 2 Reinforcement Layer 3 Rubber Layer 4 Laminated Rubber Body 7, 8 Mounting Plate 9, 10, 11, 12 Lead Plug

Claims (24)

[Scope of utility model registration request] 1. A lead rubber-containing laminated rubber bearing device, which is arranged between an upper structure and a lower structure supporting the upper structure and seismically supports the upper structure, comprising a reinforcing layer and a rubber. A laminated rubber body in which layers are alternately laminated, upper and lower mounting plates attached to the upper and lower surfaces of the laminated rubber body, and at least four lead plugs penetrating the laminated rubber body. The four lead plugs extend to at least a part of one of the upper and lower mounting plates, and the planar shape of the one mounting plate is a square. Each lead plug is a laminated rubber bearing device with lead plugs arranged at each corner of the rhombus with respect to the rectangular planar shape of the mounting plate. 2. The reinforcing layer comprises a plurality of thin reinforcing plates and a thick reinforcing plate arranged on at least one of the upper and lower surfaces of the laminated rubber body. Laminated rubber bearing device with lead plug. 3. A laminated rubber bearing device with lead plugs for supporting bridge girders, wherein the upper structure is a bridge girder, the lower structure is a bridge pier, and the bridge girder is interposed between the bridge girder and the bridge pier. In the lead plug, the line connecting the centers of the two lead plugs arranged on the diagonal of the rhombus extends parallel to the bridge axis direction, and the line connecting the centers of the remaining two lead plugs is the bridge axis direction. The laminated rubber bearing device with a lead plug according to claim 1 or 2, wherein the laminated rubber bearing device is arranged so as to extend orthogonally thereto. 4. One of holding the relative position of the laminated rubber body with respect to the upper structure in at least the horizontal direction in the horizontal plane and holding the relative position of the laminated rubber body with respect to the lower structure in at least the horizontal direction in the horizontal plane. For holding the linear position holding means interposed between one of the upper structure and the upper mounting plate and between the lower structure and the lower mounting plate and the upper structure. One of holding the relative position of the laminated rubber body in the horizontal plane with respect to the linear direction and the rotational direction and holding the relative position of the laminated rubber body with respect to the lower structure in the horizontal plane with respect to the linear direction and the rotational direction. To do so, it further comprises linear and rotational position holding means interposed between the upper structure and the upper mounting plate and between the lower structure and the lower mounting plate. The laminated rubber bearing device according to any one of claims 1 to 3. 5. The linear and rotational direction position holding means is interposed between the lower structure and the lower mounting plate.
The laminated rubber bearing device described in. 6. The laminated rubber bearing according to claim 4, further comprising a substrate disposed between the lower structure and the lower mounting plate and fixed to the lower structure by anchor bolts or the like. apparatus. 7. The linear and rotational position holding means engages, on the one hand, with a recess or through hole formed in the lower mounting plate and, on the other hand, with a recess or through hole formed in the substrate. The laminated rubber bearing device according to claim 6, further comprising a mating engagement piece. 8. The linear and rotational position holding means includes an engaging projection that is engaged with a recess or a through hole formed in the base plate or the lower mounting plate and is mounted on the lower mounting plate or the base plate. The laminated rubber bearing device according to claim 6 or 7. 9. The laminated rubber bearing device according to claim 4, wherein the linear position holding means is interposed between the upper structure and the upper mounting plate. 10. The method according to claim 4, further comprising a sole plate disposed between the upper structure and the upper mounting plate and fixed to the upper structure by a bolt or the like. The laminated rubber bearing device described. 11. The linear position holding means comprises, on the one hand,
11. The assembly according to claim 10, further comprising an engaging piece that engages with a recess or through hole formed in the upper mounting plate and, on the other hand, engages with the recess or through hole formed in the sole plate. Laminated rubber bearing device. 12. The linear position holding means includes an engaging protrusion that engages with a recess or a through hole formed in the upper mounting plate or the sole plate and is mounted on the sole plate or the upper mounting plate. The laminated rubber bearing device according to claim 10 or 11. 13. The linear position holding means holds the relative position of the laminated rubber body with respect to the upper structure with respect to the linear direction in the horizontal plane, and the rotation direction of the laminated rubber body relative to the upper structure in the horizontal plane. 5. A combination of a plurality of engagement pieces or a plurality of engagement projections or a combination of at least one engagement piece and at least one engagement projection so as to also maintain a relative position with respect to each other. 13. The laminated rubber bearing device according to any one of 12. 14. The laminated rubber bearing device according to claim 4, wherein the linear and rotational position holding means is interposed between the upper structure and the upper mounting plate. 15. The laminated rubber bearing device according to claim 14, further comprising a sole plate disposed between the upper structure and the upper mounting plate and fixed to the upper structure by bolts or the like. 16. The linear and rotational position holding means engages, on the one hand, with a recess or through hole formed in the upper mounting plate and, on the other hand, with a recess or through hole formed in the sole plate. 16. The laminated rubber bearing device according to claim 15, further comprising engaged engaging pieces. 17. The linear and rotational position holding means engages with a recess or a through hole formed in an upper mounting plate or a sole plate, and has an engaging projection mounted on the sole plate or the upper mounting plate. Claim 15 or 16 which comprises
The laminated rubber bearing device described in. 18. The linear position holding means is interposed between the lower structure and the lower mounting plate.
The laminated rubber bearing device according to any one of 4 to 17. 19. The laminated rubber bearing device according to claim 18, further comprising a substrate disposed between the lower structure and the lower mounting plate and fixed to the lower structure by anchor bolts or the like. 20. The linear position holding means comprises, on the one hand,
20. The laminate according to claim 19, further comprising an engagement piece that engages with a recess or through hole formed in the lower mounting plate and, on the other hand, engages with a recess or through hole formed in the substrate. Rubber bearing device. 21. The linear position holding means is provided with an engaging projection which is engaged with a recess or a through hole formed in the base plate or the lower mounting plate and which is mounted on the lower mounting plate or the base plate. The laminated rubber bearing device according to claim 19 or 20. 22. The linear and rotational position holding means comprises a plurality of engagement pieces, a plurality of engagement projections, or a combination of at least one engagement piece and at least one engagement projection. Item 22. The laminated rubber bearing device according to any one of items 4 to 21. 23. The engagement piece or the engagement projection is also engaged with the laminated rubber body.
23. The laminated rubber bearing device according to any one of 7 and 20 to 22. 24. The reinforcing layer comprises a plurality of thin-walled reinforcing plates, and upper and lower thick-walled reinforcing plates provided between the plurality of thin-walled reinforcing plates. Alternatively, the engaging projection is engaged with a recess or a through hole formed in a corresponding thick reinforcing plate.
The laminated rubber bearing device according to any one of 7 and 20 to 23.